#include <iostream>
#include <unistd.h>
#include <sys/socket.h>
#include <sys/types.h>
#include <arpa/inet.h>
#include <netinet/in.h>
#include <string>
#include <cstring>
#include <stdlib.h>


void Usage(std::string proc)
{
    std::cout << "\n\rUsage: " << proc << " serverip serverport\n"
              << std::endl;
}
int main(int argc, char *argv[])
{

    if (argc != 3)
    {
        Usage(argv[0]);
        exit(1);
    }
    std::string serverip = argv[1];
    uint16_t serverport = std::stoi(argv[2]);


    int sockfd = socket(AF_INET, SOCK_STREAM, 0);

    if (sockfd < 0)
    {
        std::cerr << "socketfd error " << std::endl;
        return 1;
    }
    struct sockaddr_in server;
    memset(&server,0,sizeof(server));
    server.sin_family = AF_INET;
    server.sin_port = htons(serverport);
    // inet_pton(AF_INET,serverip.c_str(),&(server.sin_addr));
    server.sin_addr.s_addr = inet_addr(serverip.c_str());
    // tcp客户端要不要bind？1 要不要显示的bind？0 系统进行bind，随机端口
    // 客户端发起connect的时候，进行自动随机bind
    int n = connect(sockfd,(struct sockaddr*)&server,sizeof(server));
    if(n < 0)
    {
        std::cerr<<"connect error"<<std::endl;
        return 2;
    }

    // std::string message;
    char message[1024];
    while(true)
    {
        std::cout<<"Please Enter# ";
        std::cin.getline(message,1024);
        //std::getline(std::cin,message);
        //std::cin >> message;
        // while(!std::getline(std::cin,message))
        // {
        //     continue;
        // }  
        // write(sockfd,message.c_str(),message.size());
        write(sockfd,message,1024);

        char inbuffer[4096];
        bzero(inbuffer,sizeof(inbuffer));
        int n = read(sockfd,inbuffer,sizeof(inbuffer));
        if(n > 0)
        {
            inbuffer[n] = 0;
            std::cout<< inbuffer <<std::endl;
        }


        // else if(n == 0)
        // {
        //     continue;
        // }
        // else{}
    }


    close(sockfd);
    return 0;
}